Table 4. A sample from the Illinois Natural Areas Inventory showing acres of all grades A and B prairie natural communities for three of 14 natural divisions; "C" indicates that only Grade C habitat is present in the division or section, "P" indicates that this natural community is present in the division or section, but the quality is not known. (Extracted from Table 6 in White, 1978).

 

Natural Community

Natural Division and Section

State-wide totals for natural communities

1

2a

2b

3a

3b

3c

3d

A

B

A

B

A

B

A

B

A

B

A

B

A

B

A

B

Prairie		                                

Dry prairie

C

C

                

C

1.3

0.1

Dry-mesic prairie

    

1.0

      

0.6

8.2

    

1.3

3.0

  

2.0

9.4

50

Mesic prairie

    

0.6

0.5

    

25

62

3.8

1.9

9.5

31

  

2.0

54

220

Wet-mesic prairie

    

1.9

3.1

                    

26

99

Wet prairie

      

8.0

      

4.6

  

3.1

12

73

    

12

169

Dry sand [prairie

        

C

    

122

16

    

C

122

293

Dry-mesic sand prairie

    

0.4

0.6

        

219

20

14

21

    

256

81

Mesic sand prairie

                

55

38

9.0

44

C

69

90

Wet-mesic sand prairie

                

14

7.0

  

12

    

16

26

Wet sand prairie

                

79

60

  

6.5

    

79

84

Dry gravel prairie

      

1.0

P

  

3.0

9.2

        

0.4

5.2

3.4

15

Dry-mesic gravel prairie

      

11

      

2.4

    

1.0

1.2

8.5

19

9.5

34

Mesic gravel prairie

                    

8.9

9.7

    

8.9

9.7

Dry dolomite prairie

P

  

4.1

5.4

    

C

        

C

4.1

6.9

Dry-mesic dolomite pr.

            

1.0

3.0

            

1.0

7.2

Mesic dolomite prairie

            

1.0

3.0

            

1.0

3.0

Wet -mesic dolomite pr.

              

14

            

–

14

Wet dolomite prairie

              

5.0

            

–

5.0

Loess hill prairie

  

2.5

                        

158

214

Glacial drift hill prairie

          

0.3

                

14

20

Gravel hill prairie

              

0.5

            

0.9

2.5

Sand hill prairie

1.6

0.5

                        

1.6

0.5

Shrub prairie		                      

3.1

C

–

60

Total acreages for all natural communities in division /section

1.6

3.0

9.2

177

1.9

22

1123

3692

880

889

122

381

11

36